CAI Linfeng, LI Haoge, ZHAO Wenwen, et al. Application of simplified three-equation transition model in hypersonic flow[J]. 2019, 37(6): 945-949.DOI: 10.7638/kqdlxxb-2017.0172.
Application of simplified three-equation transition model in hypersonic flow
the numerical simulation study of hypersonic boundary-layer transitional flow was carried out on a flat-plate
a double wedge
and a cone by modifying
k-ω
SST turbulence model and the intermittency transition model with compressibility correction. Based on the comparison with experimental result
it is shown that the simplified three-equation transition model based on the pressure gradient characterization parameter
T
w
=
R
T
Ω/ω
can correctly catch the transition onset location
the length of transition region
and the turbulent z
one heat flux on the wall for the flat-plate hypersonic boundary-layer flow. For the double wedge and cone case
the wall heat flux in turbulent zone calculated by the simplified three-equation transition model is much higher than the experimental data due to the flow compression effects. However
it can agree well with the experimental data after adding compressibility correction to the model. The simplified three-equation transition model with appropriate compressibility correction has potential to simulate hypersonic boundary-layer transitional flow correctly.
关键词
Keywords
references
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